Multiple choice

The dye utilised for staining proteins is

  1. Bromsulphthalein

  2. Chlorophenol red

  3. Coomassie Brilliant Blue

  4. Cresol Red

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Coomassie Brilliant Blue is the name of two similar triphenylmethane dyes that were developed for use in the textile industry but are now commonly used for staining proteins in analytical biochemistry. Coomassie Brilliant Blue G-250 differs from Coomassie Brilliant Blue R-250 by the addition of two methyl groups.

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